CN103701622A - IRF (intelligent resilient framework)-system-based multicast processing method and device - Google Patents
IRF (intelligent resilient framework)-system-based multicast processing method and device Download PDFInfo
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Abstract
The invention discloses an IRF (intelligent resilient framework)-system-based multicast processing method and an IRF-system-based multicast processing device. The method comprises the following steps of establishing a multicast routing table entry, and determining corresponding outbound interface distribution information, wherein the outbound interface distribution information is used for indicating member equipment where at least one outbound interface is located when a multicast data stream corresponding to the multicast routing table entry leaves an IRF system; obtaining a selection set list for the multicast routing table entry according to the corresponding outbound interface distribution information, and transmitting the selection set list to corresponding upstream equipment directly connected with the IRF system, wherein the selection set list comprises at least two member equipment selection sets, each member equipment selection set comprises an equipment ID (identifier) of at least one piece of member equipment, the member equipment selection sets are sequentially arranged from good optimization effects to poor optimization effects on forwarding paths in the IRF system, and the corresponding upstream equipment is external equipment of an upper hop when the multicast data stream corresponding to the multicast routing table entry enters the IRF system.
Description
Technical field
The application relates to network communications technology field, particularly a kind of multicast processing method and device based on IRF system.
Background technology
IRF(Intelligent Resilient Framework, intelligent elastic framework) be a kind of software virtualization technology, its core concept is that multiple devices are linked together by IRF physical port, carries out after necessary configuration, is virtualized into one " distributed apparatus ".Use this Intel Virtualization Technology can gather hardware resource and the software disposal ability of multiple devices, realize collaborative work, the unified management of multiple devices and uninterruptedly safeguard.
Conventionally, " distributed apparatus " that multiple devices are consisted of IRF technology is called IRF system, each equipment in IRF system is called to member device, and the link between member device is called stacking link, and the port of stacking both link ends is called stack port (IrfPort).As shown in Figure 1, in a typical IRF networking, comprise two kind equipments: IRF member device and stand-alone equipment.Wherein, stand-alone equipment can only unit operation, can not form IRF system with other equipment, as the equipment in Fig. 1 (Device); Member device can form IRF system with other apparatus interconnections, and as (Master) member device of the master in Fig. 1 and standby (Slave) member device, each IRF member device can be unified to manage.
IRF technology mainly has the following advantages:
1, streamlining management: after IRF system forms, user can login IRF system by the arbitrary port of any member device, and the intrasystem all member devices of IRF are carried out to unified management.
2, high reliability: the high reliability of IRF system is embodied in many aspects, for example: IRF system is comprised of many member devices, Master member device is responsible for the Operations, Administration and Maintenance of IRF system, and Slave member device also can be processed business in as backup.Once Master member device fault, the new Master member device of the system rapid automatic election of meeting, does not interrupt with assurance business, thereby has realized the 1:N backup of equipment; In addition, stacking link between member device is supported polymerizable functional, physical link between IRF system and upper and lower layer equipment is also supported polymerizable functional, can backup each other and also can carry out load balancing, thereby further improved the reliability of IRF system between multilink.
3, powerful extension of network ability: by increasing member device, can expand easily port number, the bandwidth of IRF system.Because each member device has CPU(central processing unit), can independent process protocol massages, carry out message repeating, so IRF system expanding treatment ability easily.
In IRF networking, a kind of implementation method of comparatively optimizing of the forwarding of multicast data message is: on each member device, all safeguarded the outgoing interface distribution situation that each multicast routing table item is corresponding (or outgoing interface distributed intelligence),, with (S, G) which member device the outgoing interface of the multicast traffic stream of (S represents multicast source, and G represents multicast group G) expression in IRF system is positioned on; At a certain member device, receive after multicast traffic stream (S, G), if this multicast traffic stream does not all have outgoing interface on the member device in this member device and downstream,, this member device is no longer transmitted to this multicast traffic stream the member device in downstream.For example, in IRF network as shown in Figure 2, these 4 member devices of S1～S4 form the IRF system of a chain; Routing device R1 connects this IRF system by polymerization technique, that is, the upper port that connects S1～S4 of routing device R1 joins in an aggregation group; Routing device R2 connects S1 and S2 by polymerization technique.Suppose, multicast traffic stream (S, G) enters IRF system from routing device R1, and be finally transmitted to terminal equipment Client1 and routing device R2,, routing device R1 receives multicast traffic stream (S, G) afterwards, in local multicast is transmitted, find corresponding outgoing interface, find that this outgoing interface is aggregation group,, from this aggregation group, select this multicast traffic stream of port repeat (S, G), suppose, be transmitted to member device S2; Member device S2 finds that the outgoing interface that corresponding multicast routing table item is corresponding is only distributed on member device S1 and S2, S2 is only by this multicast traffic stream (S, G) be transmitted to S1, and can not be transmitted to S3, and preferentially forward principle by this multicast traffic stream (S according to frame nearby, G) be transmitted to R2, that is, forward-path is S2 → R2; S1 receives this multicast traffic stream (S, G) afterwards, is transmitted to Client1, that is, forward-path is S2 → S1 → Client1.Thereby the jumping figure of multicast traffic stream (S, G) stacking link of process in IRF system is that 0+1=1 jumps.
Use said method, reduced to a certain extent the inessential inundation of the multicast traffic stream on stacking link, the optimization that has realized multicast traffic stream forwards, yet this method also exists obvious defect in some cases.
For example, as shown in Figure 3, this IRF network is identical with IRF network as shown in Figure 2, supposes, routing device R1 receives multicast traffic stream (S, G) afterwards, has been transmitted to member device S4; Because corresponding outgoing interface is on S1 and S2, therefore, S4 needs this multicast traffic stream (S, G) to be transmitted to S2 by S3; S2 is by this multicast traffic stream (S, G) be transmitted to routing device R2, and by this multicast traffic stream (S, G) be transmitted to S1, by S1, be transmitted to Client1, like this, multicast traffic stream (the S that routing device R2 receives, G) forward-path is S4 → S3 → S2 → R2, and the forward-path of the multicast traffic stream (S, G) that terminal equipment Client1 receives is S4 → S3 → S2 → S1 → Client1.Thereby the jumping figure of multicast traffic stream (S, G) stacking link of process in IRF system is that 2+1=3 jumps, the optimization that does not realize like this multicast traffic stream forwards, and has increased the flow of stacking link.
Or as shown in Figure 4, these 4 member devices of S1～S4 form the IRF system of a chain; Routing device R1 connects this IRF system by polymerization technique, and routing device R2 connects this IRF system by polymerization technique.Suppose, routing device R1 receives multicast traffic stream (S, G) afterwards, has been transmitted to member device S4; S4 preferentially forwards principle according to frame nearby this multicast traffic stream is transmitted to routing device R2, and, owing to also having an outgoing interface on S1, therefore, S4 needs this multicast traffic stream (S, G) by S3, S2, be transmitted to S1, by S1, be transmitted to Client1, like this, multicast traffic stream (the S that routing device R2 receives, G) forward-path is S4 → R2, and the forward-path of the multicast traffic stream (S, G) that terminal equipment Client1 receives is S4 → S3 → S2 → S1 → Client1.Thereby the jumping figure of multicast traffic stream (S, G) stacking link of process in IRF system is that 0+3=3 jumps, the optimization that does not so also realize multicast traffic stream forwards, and has increased the flow of stacking link.
Therefore in some cases, in IRF network, existing multicast packet stream forwarding method can not be realized the optimization forwarding of multicast traffic stream.
Summary of the invention
The application provides a kind of multicast processing method and device based on IRF system, can not realize the problem that the optimization of multicast traffic stream forwards to solve existing multicast packet stream forwarding method in IRF network in some cases.
The application's following scheme is as follows:
On the one hand, provide a kind of multicast processing method based on IRF system, IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connects, and the method is applied to member device, and the method comprises:
Set up multicast routing table item and determine corresponding outgoing interface distributed intelligence, wherein, the member device at least one outgoing interface place that outgoing interface distributed intelligence is used to indicate the corresponding multicast traffic stream of this multicast routing table item while leaving IRF system;
For multicast routing table item, according to corresponding outgoing interface distributed intelligence, obtain selecting aggregate list and send to the corresponding upstream equipment direct-connected with IRF system;
Wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, at least two member devices select set according to the effect of optimization of the forward-path in IRF system the order from excellent to bad arrange, corresponding upstream equipment is the external equipment of the upper hop of the corresponding multicast traffic stream of this multicast routing table item while entering IRF system.
On the other hand, a kind of multicast processing method based on IRF system is also provided, and IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connects, the method is applied to the external equipment direct-connected with IRF system, and the method comprises:
Receive the selection aggregate list that IRF system is sent, wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, and at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system;
When the outgoing interface in local corresponding multicast routing table item is the aggregation group being formed by least two port trunkings, according to the order from excellent to bad, will select each member device in aggregate list to select set to mate with these at least two ports successively;
If matching result is current member device to be selected to gather is the subset of these at least two ports, stop coupling, according to this current member device, select all devices ID in set, determine the port that member device indicated with this all devices ID on this equipment is connected, the port of determining is carried out to polymerization, and the outgoing interface in corresponding multicast routing table item is revised as to the aggregation group that polymerization obtains.
Another aspect, also provides a kind of multicast processing unit based on IRF system, and IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connects, and this application of installation is in member device, and this device comprises:
Set up module, for setting up multicast routing table item and determining corresponding outgoing interface distributed intelligence, the member device at least one outgoing interface place when wherein, outgoing interface distributed intelligence is used to indicate the corresponding multicast traffic stream of this multicast routing table item and leaves IRF system;
Computing module, for for multicast routing table item, the outgoing interface distributed intelligence according to corresponding, obtains selecting aggregate list; Wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, and at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system;
Sending module, for the corresponding upstream equipment direct-connected with IRF system that send to that computing module is obtained; Wherein, corresponding upstream equipment is the external equipment of the upper hop of the corresponding multicast traffic stream of this multicast routing table item while entering IRF system.
Another aspect, a kind of multicast processing unit based on IRF system is also provided, and IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connects, this application of installation in the direct-connected external equipment of IRF system, this device comprises:
Receiver module, for receiving the selection aggregate list that IRF system is sent, wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, and at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system;
Matching module, for when the outgoing interface of local corresponding multicast routing table item is the aggregation group being formed by least two port trunkings, each member device in the selection aggregate list successively receiver module being received according to the order from excellent to bad selects set to mate with these at least two ports; If matching result is current member device to be selected to gather is the subset of these at least two ports, stop coupling, according to this current member device, select all devices ID in set, determine the port that member device indicated with this all devices ID on this equipment is connected;
Modified module, carries out polymerization for the port that matching module is determined, and the outgoing interface in corresponding multicast routing table item is revised as to the aggregation group that polymerization obtains.
By the application's following technical scheme, IRF system is after setting up multicast routing table item and determining corresponding outgoing interface distributed intelligence, for multicast routing table item, according to corresponding outgoing interface distributed intelligence, obtain selecting aggregate list and send to the corresponding upstream equipment direct-connected with IRF system, wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system, , corresponding upstream equipment is sent to IRF system from which outgoing interface by multicast traffic stream, can make the forward-path of this multicast traffic stream in IRF system optimum, which outgoing interface to send the most bad from, notice has been given this correspondence upstream equipment, thereby, upstream equipment is after knowing these information, can be in conjunction with the connection of self and IRF system, the outgoing interface multicast data forwarding that selection has more excellent effect flows the system to IRF, thereby the optimization that has realized the multicast traffic stream based on IRF system forwards.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of typical IRF networking;
Fig. 2 is a kind of forward-path schematic diagram of multicast traffic stream in a kind of IRF network of reality;
Fig. 3 is the another kind of forward-path schematic diagram of multicast traffic stream in the IRF network of Fig. 2;
Fig. 4 is a kind of forward-path schematic diagram of multicast traffic stream in another kind of actual IRF network;
Fig. 5 is the flow chart of the multicast processing method based on IRF system of the embodiment of the present application one;
Fig. 6 is the structural representation of a kind of multicast processing unit based on IRF system of the embodiment of the present application two;
Fig. 7 is the structural representation of the another kind of multicast processing unit based on IRF system of the embodiment of the present application two;
Fig. 8 is the configuration diagram of a kind of actual IRF network of the embodiment of the present application three.
Embodiment
In order to solve in some cases, in IRF network, existing multicast packet stream forwarding method can not be realized the problem of the optimization forwarding of multicast traffic stream, and a kind of multicast processing method and device based on IRF system is provided in the application's following examples.
In following examples of the application, IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connects.
Embodiment mono-
As shown in Figure 5, the multicast processing method based on IRF system of the embodiment of the present application comprises the following steps:
Step S102, member device in IRF system is by other ports except stack port, send topological notification packet to the direct-connected external equipment of IRF system, wherein, in this topology notification packet, carry the device id of the member device that sends this topology notification packet;
In actual implementation process, topological notification packet can be UDP(User Datagram Protoco (UDP)) message, the device id of member device can be for example the frame number of member device place machine frame.
Whether the member device that in addition, can also carry the outbound port of this message in topological notification packet and send this message is the information such as IRF form.Wherein, whether be that IRF form refers to whether be the member device in IRF system.
Step S104, external equipment, after receiving topological notification packet, is saved in the corresponding relation receiving between the device id carrying in the port id of port of this topology notification packet and this topology notification packet in local IRF system map table; Concrete, IRF system map tableau format can be referring to table 1 or table 2:
Table 1
| The port id of the port on this external equipment | The device id of member device in IRF system | Remarks |
Table 2
Step S106, member device in IRF system is set up multicast routing table item and is determined corresponding outgoing interface distributed intelligence, the member device at least one outgoing interface place when wherein, outgoing interface distributed intelligence is used to indicate the corresponding multicast traffic stream of this multicast routing table item and leaves IRF system;
IRF system made after multicast routing table item, by existing multicast routing protocol running additions and deletions outgoing interface, safeguard outgoing interface distributed intelligence simultaneously.
Step S108, the member device in IRF system, for multicast routing table item, according to corresponding outgoing interface distributed intelligence, obtains selecting aggregate list and sends to the corresponding upstream equipment direct-connected with IRF system; Wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, at least two member devices select set according to the effect of optimization of the forward-path in IRF system the order from excellent to bad arrange, corresponding upstream equipment is the external equipment of the upper hop of the corresponding multicast traffic stream of this multicast routing table item while entering IRF system;
In actual implementation process, after outgoing interface distributed intelligence is stable, that is, after the scheduled time, outgoing interface distributed intelligence no longer changes, execution step S108.Follow-up, if variation has occurred in outgoing interface distributed intelligence, after the outgoing interface distributed intelligence after changing is stablized, again perform step S108, so that the selection aggregate list that corresponding upstream equipment is preserved this locality is upgraded.Here, why to wait until that outgoing interface distributed intelligence performs step S108 after stable again, be repeatedly change the frequent calculating of the selection aggregate list causing and send for fear of outgoing interface distributed intelligence, and corresponding upstream equipment is selected the continuous renewal of aggregate list for this locality.
Corresponding upstream equipment is also the corresponding PIM neighbours of incoming interface (that is port when, the corresponding multicast traffic stream of this multicast routing table item enters IRF system) in this multicast routing table item.
In actual implementation process, select aggregate list to send by the forward-path notification packet of UDP type.In addition, send mode can be to send one by one; Also can be when upstream equipment corresponding to a plurality of multicast routing table items is identical, the selection aggregate list obtaining for these a plurality of multicast routing table items is carried in a forward-path notification packet and sends to this upstream equipment.Now, in forward-path notification packet, can comprise: the number of multicast routing table item, the selection aggregate list FrameSelectSetTable obtaining for each multicast routing table item.
In addition, in step S108, according to corresponding outgoing interface distributed intelligence, obtain selecting the method for aggregate list to determine according to different emphasis, for example, user pays close attention to the flow on the stacking link (being stacking link) reducing in IRF system most, can one obtain selecting aggregate list in accordance with the following methods, or, user need to consider " making full use of the link bandwidth between upstream equipment and IRF system " and " reducing the flow on the stacking link in IRF system ", can two obtain selecting aggregate list in accordance with the following methods.Obviously, can also stress the method that situation is selected other according to actual.
Method one,
In the method one, comprise the following steps 11 to step 12:
Step 11: for each member device in IRF system, calculate multicast traffic stream from this member device enters IRF system and from each outgoing interface leave before IRF system the jumping figure IRF_LINK_HOP of stacking link of process; That is, the quantity of multicast traffic stream stacking link of necessary process in IRF system.
Step 12: according to the ascending order of IRF_LINK_HOP, the whole member devices in IRF system are sorted, the device id of each member device after sequence is formed to a member device and select set, form and select aggregate list.
In method one, IRF_LINK_HOP is less, and effect of optimization is more excellent.
Method two,
In the method two, comprise the following steps 21-22:
Step 21: each set A forming for any n member device in IRF system
n={ Sj
1, Sj
2..., Sj
i..., Sj
n, according to formula (1), calculate O (A
n):
O(A
n)＝W×O
1(A
n)+(1-W)O
2(A
n) （1）
Below the parameters in formula (1) is introduced:
N=1,2,3 ..., N, N represents the member device sum in IRF system;
W is weighted value, and 0≤W≤1 is used for adjusting O
1(A
n) and O
2(A
n) weight, represent that user more payes attention to " making full use of the link bandwidth between upstream equipment and IRF system " or more payes attention to " reducing the flow on the stacking link in IRF system ";
O
1(A
n) for reflecting " making full use of the link bandwidth between upstream equipment and IRF system " impact on effect of optimization, O
1(A
n)=N/n;
O
2(A
n) for reflecting " flow on the stacking link of minimizing IRF system " impact on effect of optimization,
o
2(Sj
i) represent for A
nin device id Sj
iindicated member device, the multicast traffic stream calculating from this member device enters IRF system and from each outgoing interface leave before IRF system the jumping figure of stacking link of process, that is, and the IRF_LINK_HOP in said method one;
Step 22: according to O (A
n) ascending order, to each { A
n| n=1,2,3 ..., N} sorts, and forms described selection aggregate list.
In this method two, A
ncan there be one or more, work as A
nthere is when a plurality of each A
na kind of set that n member device in IRF system forms, each A
ndifferent.Suppose, IRF system is comprised of member device S1, S2 and S3, A
1having 3, is respectively { S1}, { S2} and { S3}; A
2having 3, is respectively { S1, S2}, { S2, S3} and { S1, S3}, A
3there is 1: { S1, S2, S3}.
Step S110, after corresponding upstream equipment receives the selection aggregate list that IRF system sends, when the outgoing interface in local corresponding multicast routing table item is the aggregation group being formed by least two port trunkings, according to the order from excellent to bad, will select each member device in aggregate list to select set to mate with these at least two ports successively;
Wherein, when the outgoing interface in local corresponding multicast routing table item is a port or the aggregation group being comprised of a port, keep existing outgoing interface constant.
Step S112, if matching result is current member device to be selected to gather is the subset of these at least two ports, corresponding upstream equipment stops coupling, according to this current member device, select all devices ID in set, determine the port that member device indicated with this all devices ID on this equipment is connected, the port of determining is carried out to polymerization, and the outgoing interface in corresponding multicast routing table item is revised as to the aggregation group that polymerization obtains.
In step S110-S112, suppose, the selection aggregate list receiving is designated as FrameSelectSetTable={FrameSelectSet1, FrameSelectSet2, ..., FrameSelectSetn}, outgoing interface in local corresponding multicast routing table item is the aggregation group being formed by least two port trunkings, the member device set at the member port place in this aggregation group is designated as TrunkFrameSet, from excellent to bad successively by FrameSelectSet1, FrameSelectSet2, ..., FrameSelectSetn mates with TrunkFrameSet, suppose, FrameSelectSet4 is the subset of TrunkFrameSet, , the port that connects each member device in TrunkFrameSet4 on this equipment is carried out to polymerization, the outgoing interface of the aggregation group that polymerization is obtained in local corresponding multicast routing table item.
If it is not all the subset of TrunkFrameSet that all member devices are selected set, existing outgoing interface is constant.
In addition, the method of determining the port that member device indicated with this all devices ID on this equipment is connected comprises: according to this current member device, select all devices ID in set, in IRF system map table, find corresponding port id, determine that the port that member device indicated with this all devices ID on this equipment is connected is the indicated port of port id finding.
In the above embodiment of the application, IRF system is after setting up multicast routing table item and determining corresponding outgoing interface distributed intelligence, for multicast routing table item, according to corresponding outgoing interface distributed intelligence, obtain selecting aggregate list and send to the corresponding upstream equipment direct-connected with IRF system, wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system, , corresponding upstream equipment is sent to IRF system from which outgoing interface by multicast traffic stream, can make the forward-path of this multicast traffic stream in IRF system optimum, which outgoing interface to send the most bad from, notice has been given this correspondence upstream equipment, thereby, upstream equipment is after knowing these information, can be in conjunction with the connection of self and IRF system, the outgoing interface multicast data forwarding that selection has more excellent effect flows the system to IRF, thereby the optimization that has realized the multicast traffic stream based on IRF system forwards.
In addition, the method for above embodiment can be applied to, in three layers of multicast, also can be applied in Layer 2 Multicast.
Embodiment bis-
For the method in above-described embodiment one, in the embodiment of the present application, provide a kind of multicast processing unit based on IRF system.
Application of installation is as shown in Figure 6 in member device, and this device comprises with lower module: set up module 201, computing module 202 and sending module 203, wherein:
Set up module 201, for setting up multicast routing table item and determining corresponding outgoing interface distributed intelligence, the member device at least one outgoing interface place when wherein, outgoing interface distributed intelligence is used to indicate the corresponding multicast traffic stream of this multicast routing table item and leaves IRF system;
Sending module 203, for the corresponding upstream equipment direct-connected with IRF system that send to that computing module 202 is obtained; Wherein, corresponding upstream equipment is the external equipment of the upper hop of the corresponding multicast traffic stream of this multicast routing table item while entering IRF system.
Wherein, in a kind of embodiment, computing module comprises: jumping figure computing unit and the first processing unit, wherein:
Jumping figure computing unit, for each member device for IRF system, calculate multicast traffic stream from this member device enters IRF system and from each outgoing interface leave before IRF system the jumping figure IRF_LINK_HOP of stacking link of process;
The first processing unit, for the ascending order of IRF_LINK_HOP calculating according to jumping figure computing unit, whole member devices in IRF system are sorted, the device id of each member device after sequence is formed to a member device and select set, form and select aggregate list.
Or in another kind of embodiment, computing module comprises: parameter calculation unit and the second processing unit, wherein:
Parameter calculation unit, each set A forming for any n the member device for by IRF system
n={ Sj
1, Sj
2..., Sj
i..., Sj
n, calculate O (A
n)=W * O
1(A
nthe O of)+(1-W)
2(A
n); Wherein, n=1,2,3 ..., N, N represents the member device sum in IRF system, W is weighted value, 0≤W≤1, O
1(A
n)=N/n,
o
2(Sj
i) represent for A
nin device id Sj
iindicated member device, the multicast traffic stream calculating from this member device enters IRF system and from each outgoing interface leave before IRF system the jumping figure of stacking link of process;
The second processing unit, for according to O (A
n) ascending order, to each { A
n| n=1,2,3 ..., N} sorts, and forms and selects aggregate list.
In addition, sending module, also for by other ports except stack port, send topological notification packet to the direct-connected external equipment of IRF system, wherein, in this topology notification packet, carry the device id of the member device of this topology notification packet of transmission.
The multicast processing unit based on IRF system is as shown in Figure 7 applied in the external equipment direct-connected with IRF system, and this device comprises with lower module: receiver module 301, matching module 302 and modified module 303, wherein:
In addition, in device as shown in Figure 7, can also comprise: preserve module, wherein:
Receiver module, the topological notification packet of also sending for receiving IRF system, wherein, carries the device id of the member device that sends this topology notification packet in this topology notification packet;
Preserve module, for receiver module being received to the port id of port of this topology notification packet and the corresponding relation between device id that this topology notification packet carries, be saved in local IRF system map table.
Wherein, matching module determines that the mode of the port that member device indicated with this all devices ID on this equipment is connected comprises: according to this current member device, select all devices ID in set, in IRF system map table, find corresponding port id, determine that the port that member device indicated with this all devices ID on this equipment is connected is the indicated port of port id finding.
Embodiment tri-
The IRF network shown in Fig. 8 of take in the present embodiment is example, describes the method in above-described embodiment one in detail.As shown in Figure 8, these 4 member devices of S1～S4 form the IRF system of a chain; Routing device R1 connects this IRF system by polymerization technique, that is, the upper port that connects S1～S4 of routing device R1 joins in an aggregation group; Routing device R2 connects S1 and S2 by polymerization technique.Suppose, multicast traffic stream (S, G) enters IRF system from routing device R1, and is finally transmitted to terminal equipment Client1 and routing device R2.
Port on routing device R1 and S1～S4 is as shown in table 3:
Table 3
| The port id of port | Explanation |
| Port(R1-S1) | The port of the upper connection of R1 S1 |
| Port(R1-S2) | The port of the upper connection of R1 S2 |
| Port(R1-S3) | The port of the upper connection of R1 S3 |
| Port(R1-S4) | The port of the upper connection of R1 S4 |
| Port(S1-R1) | The port of the upper connection of S1 R1 |
| Port(S2-R1) | The port of the upper connection of S2 R1 |
| Port(S3-R1) | The port of the upper connection of S3 R1 |
| Port(S4-R1) | The port of the upper connection of S4 R1 |
Step S202, in IRF system, other ports that pass through except stack port of S1～S4 send topological notification packet to R1, R2 and Client, carry the frame number of the member device that sends this message in this topology notification packet;
Step S204, R1 receives after topological notification packet the corresponding relation between the frame carrying in the port id of the inbound port of this message and this message number is saved in to IrfFrameMapTable(IRF system map table as shown in table 4) in;
Table 4
| The port id of R1 upper port | The frame number of member device in IRF system | Remarks |
| Port(R1-S1) | S1 | |
| Port(R1-S2) | S2 | |
| Port(R1-S3) | S3 | |
| Port(R1-S4) | S4 |
Step S206, supposes and in IRF system, has set up a multicast routing table item (S, G), corresponding outgoing interface distributed intelligence is for being distributed on S1 and S2,, can calculate and select aggregate list FrameSelectSetTable according to two kinds of methods in embodiment mono-, specific as follows:
Method one,
(1) S1: multicast traffic stream after S1 enters IRF system, and from S1 leave IRF system to Client1 and R2 the jumping figure of stacking link of process be 0+0=0 because just can directly arrive Client1 and R2 through S1;
(2) S2: multicast traffic stream is after S2 enters IRF system, and from S2 leave IRF system to R2, from S1 leave IRF system to Client1 the jumping figure of stacking link of process be 0+1=1,, the multicast traffic stream that arrives R2 can directly arrive R2 from S2, needs could arrive Client1 after a jumping S2 → S1 simultaneously;
(3) S3: multicast traffic stream after S3 enters IRF system, and from S2 leave IRF system to R2, from S1 leave IRF system to Client1 the jumping figure of stacking link of process be 1+1=2;
(4) S4: multicast traffic stream after S4 enters IRF system, and from S2 leave IRF system to R2, from S1 leave IRF system to Client1 the jumping figure of stacking link of process be 2+1=3.
According to the ascending order of jumping figure in (1)-(4), S1-S4 is sorted, ranking results is S1, S2, S3, S4, therefore, the selection aggregate list FrameSelectSetTable={{S1} obtaining, { S2}, { S3}, { S4}}, wherein { forward-path that S1} is corresponding is optimum, and { forward-path that S4} is corresponding is the most bad.
Method two,
Suppose W=0.3, various combination A
nunder Optimization Factor O (A
n) computational process can be as follows:
(1) for any 1 member device in IRF system, take S1 as example, O (A
1)=O (S1})=0.3 * 4/1+0.7 * O
2(S1)/1, wherein, O
2(S1)=0, thus O (S1})=0.3 * 4+0.7 * (0/1)=1.2;
(2) for any 2 member devices in IRF system, take S1 and S2 as example, O (A
2)=O (S1, S2})=0.3 * 4/2+0.7 * [O
2(S1)+O
2(S2)]/2, wherein, O
2(S1)=0, O
2(S2)=1, therefore, O (S1, S2})=0.3 * 2+0.7 * 0.5=0.95;
(3) for any 3 member devices in IRF system, take S1, S2 and S3 as example, O (A
3)=O (S1, S2, S3})=0.3 * 4/3+0.7 * [O
2(S1)+O
2(S2)+O
2(S3)]/3, wherein, O
2(S1)+O
2(S2)+O
2(S3)=0+1+2=3, therefore, O (S1, S2, S3})=0.3 * 4/3+0.7 * 1=1.1;
(4) for any 4 member devices in IRF system, that is, and S1, S2, S3 and S4, O (A
4)=O (S1, S2, S3, S4})=0.3 * 4/4+0.7 * [O
2(S1)+O
2(S2)+O
2(S3)+O
2(S4)]/4, wherein, O
2(S1)+O
2(S2)+O
2(S3)+O
2(S4)=0+1+2+3=6, therefore, O (S1, S2, S3, S4})=0.3 * 1+0.7 * 1.5=1.35.
, various combination A
nunder Optimization Factor O (A
n) as shown in table 5:
Table 5
| Member device combination A n | O 1(A n) | O 2(A n) | O(A n) |
| {S1} | 4 | 0 | 1.2 |
| {S2} | 4 | 1 | 1.9 |
| {S3} | 4 | 2 | 2.6 |
| {S4} | 4 | 3 | 3.3 |
| {S1,S2} | 2 | 0.5 | 0.95 |
| {S1,S3} | 2 | 1 | 1.3 |
| {S1,S4} | 2 | 1.5 | 1.65 |
| {S2,S3} | 2 | 1.5 | 1.65 |
| {S2,S4} | 2 | 2 | 2 |
| {S3,S4} | 2 | 2.5 | 2.35 |
| {S1,S2,S3} | 4/3 | 1 | 1.10 |
| {S1,S2,S4} | 4/3 | 4/3 | 1.33 |
| {S1,S3,S4} | 4/3 | 5/3 | 1.57 |
| {S2,S3,S4} | 4/3 | 2 | 1.80 |
| {S1,S2,S3,S4} | 1 | 1.5 | 1.45 |
According to O (A
n) order is from small to large to each member device combination A
nsort, obtain selecting aggregate list FrameSelectSetTable={{S1, S2}, S1, S2, S3), { S1}, { S1, S2, S4}, { S1, S3}, { S1, S2, S3, S4}, { S1, S3, S4}, { S1, S4}, and S2, S3}, S1, S3, S4), { S2}, { S2, S3, S4}, { S2, S4}, { S3, S4}, { S3}, { S4}, { S1, S2}}.
Step S208, IRF system is carried at the selection aggregate list calculating in forward-path notification packet, to send to corresponding upstream equipment R1;
Step S210, after R1 receives this forward-path notification packet, the outgoing interface of determining in multicast routing table item corresponding on this equipment is the aggregation group being comprised of Port (R1-S1), Port (R1-S2), Port (R1-S3), Port (R1-S4),, TrunkFrameSet={S1, S2, S3, S4}:
With FrameSelectSetTable={{S1}, { S2}, { S3}, { S4}} is example, first by { S1} mates with TrunkFrameSet, finds that { S1} is the subset of TrunkFrameSet, stop coupling, in IrfFrameMapTable as shown in table 4, find the Port corresponding with S1 (R1-S1), Port (R1-S1) is joined in a new aggregation group, the outgoing interface in multicast routing table item corresponding on this equipment is revised as to this new aggregation group; Like this, after receiving multicast traffic stream, R1 will send to S1 by Port (R1-S1) by this multicast traffic stream, only needs 0 jumping just can be transmitted to Client1 and R2 in IRF system.
Or, with FrameSelectSetTable={{S1, S2}, { S1, S2, S3), { S1}, { S1, S2, S4}, { S1, S3}, { S1, S2, S3, S4}, { S1, S3, S4}, { S1, S4}, { S2, S3}, { S1, S3, S4), { S2}, { S2, S3, S4}, { S2, S4}, { S3, S4}, { S3}, { S4}, { S1, S2}} is example, first by { S1, S2} mates with TrunkFrameSet, find { S1, S2} is the subset of TrunkFrameSet, stop coupling, in IrfFrameMapTable as shown in table 4, find and S1, the Port that S2 is corresponding (R1-S1), Port (R1-S2), Port (R1-S1) and Port (R1-S2) are joined in a new aggregation group, outgoing interface in multicast routing table item corresponding on this equipment is revised as to this new aggregation group, like this, after receiving multicast traffic stream, R1 will select this multicast packet of port repeat to flow in IRF system from Port (R1-S1) and Port (R1-S2).Thereby having considered of the forward-path in IRF system " making full use of the link bandwidth between upstream equipment and IRF system " and " reducing the flow on the stacking link in IRF system ", by a kind of compromise mode, both reduce the flow on the stacking link in IRF system, utilized preferably the link bandwidth between R1 and IRF system simultaneously.
To sum up, the above embodiment of the application can reach following technique effect:
IRF system is after setting up multicast routing table item and determining corresponding outgoing interface distributed intelligence, for multicast routing table item, according to corresponding outgoing interface distributed intelligence, obtain selecting aggregate list and send to the corresponding upstream equipment direct-connected with IRF system, wherein, select to include at least two member devices in aggregate list and select set, each member device selects to include in set the device id of at least one member device, at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system, , corresponding upstream equipment is sent to IRF system from which outgoing interface by multicast traffic stream, can make the forward-path of this multicast traffic stream in IRF system optimum, which outgoing interface to send the most bad from, notice has been given this correspondence upstream equipment, thereby, upstream equipment is after knowing these information, can be in conjunction with the connection of self and IRF system, the outgoing interface multicast data forwarding that selection has more excellent effect flows the system to IRF, thereby the optimization that has realized the multicast traffic stream based on IRF system forwards.
The foregoing is only the application's preferred embodiment, not in order to limit the application, all within the application's spirit and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of the application's protection.
Claims (14)
1. the multicast processing method based on intelligent elastic framework IRF system, described IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connects, and described method is applied to described member device, it is characterized in that, described method comprises:
Set up multicast routing table item and determine corresponding outgoing interface distributed intelligence, wherein, the member device at least one outgoing interface place that described outgoing interface distributed intelligence is used to indicate the corresponding multicast traffic stream of this multicast routing table item while leaving described IRF system;
For multicast routing table item, according to corresponding outgoing interface distributed intelligence, obtain selecting aggregate list and send to the corresponding upstream equipment direct-connected with described IRF system;
Wherein, in described selection aggregate list, include at least two member devices and select set, each member device selects to include in set the device identification ID of at least one member device, described at least two member devices select set according to the effect of optimization of the forward-path in IRF system the order from excellent to bad arrange, described corresponding upstream equipment is the external equipment of the upper hop of the corresponding multicast traffic stream of this multicast routing table item while entering described IRF system.
2. method according to claim 1, is characterized in that, described according to corresponding outgoing interface distributed intelligence, obtains selecting the method for aggregate list to comprise:
For each member device in described IRF system, calculate described multicast traffic stream from this member device enters described IRF system and from each outgoing interface leave before described IRF system the jumping figure IRF_LINK_HOP of stacking link of process;
According to the ascending order of IRF_LINK_HOP, each member device in described IRF system is sorted, the device id of each member device after sequence is formed to a member device and select set, form described selection aggregate list.
3. method according to claim 1, is characterized in that, described according to corresponding outgoing interface distributed intelligence, obtains selecting the method for aggregate list to comprise:
Each set A forming for any n member device in described IRF system
n={ Sj
1, Sj
2..., Sj
i..., Sj
n, calculate O (A
n)=W * O
1(A
nthe O of)+(1-W)
2(A
n); Wherein, n=1,2,3 ..., N, N represents the member device sum in described IRF system, W is weighted value, 0≤W≤1, O
1(A
n)=N/n,
o
2(Sj
i) represent for A
nin device id Sj
iindicated member device, the described multicast traffic stream calculating from this member device enters described IRF system and from each outgoing interface leave before described IRF system the jumping figure of stacking link of process;
According to O (A
n) ascending order, to each { A
n| n=1,2,3 ..., N} sorts, and forms described selection aggregate list.
4. method according to claim 1, is characterized in that, before transmission selection aggregate list is to the corresponding upstream equipment direct-connected with described IRF system, also comprises:
By other ports except stack port, send topological notification packet to the direct-connected external equipment of described IRF system, wherein, in this topology notification packet, carry the device id of the member device that sends this topology notification packet.
5. the multicast processing method based on intelligent elastic framework IRF system, described IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connect, described method is applied to the external equipment direct-connected with described IRF system, it is characterized in that, described method comprises:
Receive the selection aggregate list that described IRF system is sent, wherein, in described selection aggregate list, include at least two member devices and select set, each member device selects to include in set the device identification ID of at least one member device, and described at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system;
When the outgoing interface in local corresponding multicast routing table item is the aggregation group being formed by least two port trunkings, according to the order from excellent to bad, select set to mate with these at least two ports each member device in described selection aggregate list successively;
If matching result is current member device to be selected to gather is the subset of these at least two ports, stop coupling, according to this current member device, select all devices ID in set, determine the port that member device indicated with this all devices ID on this equipment is connected, the port of determining is carried out to polymerization, and the outgoing interface in described corresponding multicast routing table item is revised as to the aggregation group that polymerization obtains.
6. method according to claim 5, is characterized in that, before receiving the selection aggregate list that described IRF system sends, also comprises:
Receive the topological notification packet that described IRF system is sent, wherein, in this topology notification packet, carry the device id of the member device that sends this topology notification packet;
The corresponding relation receiving between the device id carrying in the port id of port of this topology notification packet and this topology notification packet is saved in local IRF system map table.
7. method according to claim 6, is characterized in that, the method for the port that on described definite this equipment, the member device indicated with this all devices ID is connected comprises:
According to this current member device, select all devices ID in set, in described IRF system map table, find corresponding port id, determine that the port that member device indicated with this all devices ID on this equipment is connected is the indicated port of port id finding.
8. the multicast processing unit based on intelligent elastic framework IRF system, described IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connects, and described application of installation is in described member device, it is characterized in that, described device comprises:
Set up module, for setting up multicast routing table item and determining corresponding outgoing interface distributed intelligence, the member device at least one outgoing interface place when wherein, described outgoing interface distributed intelligence is used to indicate the corresponding multicast traffic stream of this multicast routing table item and leaves described IRF system;
Computing module, for for multicast routing table item, the outgoing interface distributed intelligence according to corresponding, obtains selecting aggregate list; Wherein, in described selection aggregate list, include at least two member devices and select set, each member device selects to include in set the device identification ID of at least one member device, and described at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system;
Sending module, for the corresponding upstream equipment direct-connected with described IRF system that send to that described computing module is obtained; Wherein, described corresponding upstream equipment is the external equipment of the upper hop of the corresponding multicast traffic stream of this multicast routing table item while entering described IRF system.
9. device according to claim 8, is characterized in that, described computing module comprises:
Jumping figure computing unit, for for each member device of described IRF system, calculate described multicast traffic stream from this member device enters described IRF system and from each outgoing interface leave before described IRF system the jumping figure IRF_LINK_HOP of stacking link of process;
The first processing unit, for the ascending order of IRF_LINK_HOP calculating according to described jumping figure computing unit, whole member devices in described IRF system are sorted, the device id of each member device after sequence is formed to a member device and select set, form described selection aggregate list.
10. device according to claim 8, is characterized in that, described computing module comprises:
Parameter calculation unit, each set A forming for any n the member device for by described IRF system
n={ Sj
1, Sj
2..., Sj
i..., Sj
n, calculate O (A
n)=W * O
1(A
nthe O of)+(1-W)
2(A
n); Wherein, n=1,2,3 ..., N, N represents the member device sum in described IRF system, W is weighted value, 0≤W≤1, O
1(A
n)=N/n,
o
2(Sj
i) represent for A
nin device id Sj
iindicated member device, the described multicast traffic stream calculating from this member device enters described IRF system and from each outgoing interface leave before described IRF system the jumping figure of stacking link of process;
The second processing unit, for according to O (A
n) ascending order, to each { A
n| n=1,2,3 ..., N} sorts, and forms described selection aggregate list.
11. devices according to claim 8, is characterized in that,
Described sending module, also for by other ports except stack port, send topological notification packet to the direct-connected external equipment of described IRF system, wherein, in this topology notification packet, carry the device id of the member device of this topology notification packet of transmission.
12. 1 kinds of multicast processing unit based on intelligent elastic framework IRF system, described IRF system is comprised of IRF technology at least two member devices, between member device, by stack port, connect, described application of installation in the direct-connected external equipment of described IRF system, it is characterized in that, described device comprises:
Receiver module, for receiving the selection aggregate list that described IRF system is sent, wherein, in described selection aggregate list, include at least two member devices and select set, each member device selects to include in set the device identification ID of at least one member device, and described at least two member devices are selected set arrangement of the order from excellent to bad according to the effect of optimization of the forward-path in IRF system;
Matching module, for when the outgoing interface of local corresponding multicast routing table item is the aggregation group being formed by least two port trunkings, each member device in the selection aggregate list successively described receiver module being received according to the order from excellent to bad selects set to mate with these at least two ports; If matching result is current member device to be selected to gather is the subset of these at least two ports, stop coupling, according to this current member device, select all devices ID in set, determine the port that member device indicated with this all devices ID on this equipment is connected;
Modified module, carries out polymerization for the port that described matching module is determined, and the outgoing interface in described corresponding multicast routing table item is revised as to the aggregation group that polymerization obtains.
13. devices according to claim 12, is characterized in that, also comprise: preserve module, wherein:
Described receiver module, the topological notification packet of also sending for receiving described IRF system, wherein, carries the device id of the member device that sends this topology notification packet in this topology notification packet;
Described preservation module, is saved in local IRF system map table for described receiver module being received to the port id of port of this topology notification packet and the corresponding relation between device id that this topology notification packet carries.
14. devices according to claim 13, is characterized in that, described matching module determines that the mode of the port that member device indicated with this all devices ID on this equipment is connected comprises:
According to this current member device, select all devices ID in set, in described IRF system map table, find corresponding port id, determine that the port that member device indicated with this all devices ID on this equipment is connected is the indicated port of port id finding.
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